(My nickname gives it away, I work in the freight business)

@OP
Almost all logistics providers offer OBC services, bigger ones often have their own OBC departments, other companys use a pool of agencies.

Not knowing where you're based I would recommend Chapman Freeborn, as they operate globally and are well established in the industry. BUT they're pretty pricey.


@ everyone who's interested in the concept:

I have sold several OBC solutions to our customers, mostly in cases of imminent line stoppages. (e.g. spare parts for a broken production machine urgently needed)

I used to work with a big company where we had our own OBC department, with my current medium sized employer we use agencies. The service and prices are almost the same.

Prices obviously vary a lot depending on the destination and needed qualifications of the courier. (Good couriers have valid visas for almost all major countries, as well as some expertise in dealing with customs.)
Prices Airport to Airport start at 1500 USD for short intra-continental hops and go up to 8000 USD for distances around the globe.
BUT the prices can be a lot higher:
There are cases where the courier takes a helicopter when the destination is too far away from the airport for a car to be on site in a reasonable time.
Sometimes planes are even chartered if the next available commercial connection isn't quick enough.

From what I understand, the courier companys also have special agreements with airlines and therefore book into high fare classes but are guaranteed space on any available flight. (Which drove me nuts when I looked at possible flights and saw that I could easily travel in F or J and sleep in a great hotel at the destination for the same price and just get the shipments there myself. But all my employers forbid that until now.)